package com.jqk.apigateway.filter;

import com.alibaba.cloud.commons.lang.StringUtils;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

/**
 * @Author:jiangqikun
 * @Date:2022/3/2 16:10
 * 自定义全局过滤器需要实现GlobalFilter和Ordered接口
 **/

//@Component
public class AuthGlobalFilter implements GlobalFilter, Ordered {

    /**
     * 完成判断逻辑
     */
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        String token = exchange.getRequest().getQueryParams().getFirst("token");
        if (StringUtils.isBlank(token)) {
            System.out.println("鉴权失败");
            exchange.getResponse().setStatusCode(HttpStatus.UNAUTHORIZED);
            return exchange.getResponse().setComplete();
        }
        //调用chain.filter继续向下游执行
        return chain.filter(exchange);
    }

    /**
     * 顺序,数值越小,优先级越高
     */
    @Override
    public int getOrder() {
        return 0;
    }

}